Detectives have been given more time to question the son of a couple found shot dead in their home.
Nic Seddon, 45, from Seaham in County Durham, was arrested in his home by Durham Police over the weekend. He is being held on suspicion of murder and police have been granted a further 36 hours to question him.
Four months ago, Mr Seddon helped pull his family to safety after their car plunged into a canal in Timperley, near Manchester. He was later nominated for a Pride of Britain award for bravery.
But on Monday, Greater Manchester Police were questioning him in connection with his parents' deaths.
Bob and Patricia Seddon's bodies were both found in their home in Sale, near Manchester - both had died from gunshot wounds.
They had been married for nearly 50 years and were in their sixties. Friends described them as a 'caring couple'.